Chicago, Illinois

Patent attorneys in Chicago

Chicago, Illinois is home to 1,891 USPTO-registered patent practitioners. Working with a local practitioner can streamline in-person meetings for invention disclosures, signing inventor declarations, and reviewing prior-art search results — but every USPTO practitioner is licensed to practice nationally, so a non-local choice is also valid. Local firms with the most USPTO-registered practitioners include Cooley LLP, Mars, Inc., and HALLER LAW PLLC.

Jennifer M Hall

Reg. 38169

Patent attorney

Mars, Inc.

Chicago, IL · 60642

312-794-6539

Timothy J. Haller

Reg. 26692

Patent attorney

HALLER LAW PLLC

Chicago, IL · 60611

630-336-4283

William J Hallihan

Reg. 39210

Patent attorney

Hallihan IP Partners, LLC

Chicago, IL · 60661

312-784-3000

Lesley M Hamming

Reg. 66986

Patent attorney

Latham & Watkins LLP

Chicago, IL · 60611

312-876-7700

Eric J Hamp

Reg. 68971

Patent attorney

Banner & Witcoff, Ltd.

Chicago, IL · 60606

312-463-5472

Nathaniel A. Hamstra

Reg. 65680

Patent attorney

Quinn Emanuel Urquhart & Sullivan, LLP

Chicago, IL · 60606

312-705-7400

Mark G Hanley

Reg. 44736

Patent attorney

Hanley, Flight & Zimmerman, LLC

Chicago, IL · 60606

312-580-1020

Megan K. Hanley

Reg. 79916

Patent agent

McDonnell, Boehnen, Hulbert & Berghoff LLP

Chicago, IL · 60606

312-913-2350

Mary Theresa Hannon

Reg. 77149

Patent agent

Sidley Austin LLP

Chicago, IL · 60603

312-423-3452

Daniel I Hanrahan

Reg. 63327

Patent attorney

The Marmon Group LLC

Chicago, IL · 60602

312-372-9500

James P Hanrath

Reg. 31965

Patent attorney

Much Shelist Freed Denenberg Ament & Rubenstein, P.C.

Chicago, IL · 60606-1615

312-521-2760

Leland G Hansen

Reg. 50731

Patent attorney

McAndrews Held and Malloy LTD

Chicago, IL · 60661

312-775-8000

Elese E. Hanson

Reg. 62118

Patent attorney

Duane Morris, LLP

Chicago, IL · 60603-3433

312-499-0114

Rekha Hanu

Reg. 54916

Patent agent

Duane Morris LLP

Chicago, IL · 60603

312-499-6702

Anthony Hao

Reg. 79496

Patent attorney

Chicago, IL · 60661

816-457-0158

Aeraj U Haque

Reg. 73668

Patent attorney

Cooley LLP

Chicago, IL · 60606

312-881-6714

Michael Bernard Harlin

Reg. 43658

Patent attorney

Neal, Gerber & Eisenberg LLP

Chicago, IL · 60602

312-269-8000

Ren-How H. Harn

Reg. 73620

Patent attorney

Willkie Farr & Gallagher

Chicago, IL · 60654

312-728-9028

Margaret C Harney

Reg. 80885

Patent agent

Morgan, Lewis & Bockius LLP

Chicago, IL · 60606-1511

312-324-1727

Jason G Harp

Reg. 42634

Patent agent

Schiff Hardin LLP

Chicago, IL · 60606

312-258-5500

David S Harper

Reg. 42636

Patent attorney

McDonnell Boehnen Hulbert & Berghoff LLP

Chicago, IL · 60606

312-913-0001

Margaret C Harrington

Reg. 83718

Patent agent

Cooley LLP

Chicago, IL · 60606

312-881-6426

Charles E Harris· II

Reg. 56269

Patent attorney

Mayer Brown LLP

Chicago, IL · 60606-4637

312-701-8934

Michael J Harris

Reg. 62957

Patent attorney

Arnold & Porter Kaye Scholer LLP

Chicago, IL · 60602-4231

312-583-2422

Richard D Harris

Reg. 27898

Patent attorney

Greenberg Traurig, LLP

Chicago, IL · 60601-1732

312-456-8400

Robert Patrick Hart

Reg. 35184

Patent attorney

AddyHart P.C.

Chicago, IL · 60611

949-337-0568

Michael F Harte

Reg. 64518

Patent attorney

Office of University Counsel, University of Illinois

Chicago, IL · 60612-7228

312-996-7762

H Michael Hartmann

Reg. 28423

Patent attorney

Leydig Voit and Mayer LTD

Chicago, IL · 60601

312-616-5600

Julianne M Hartzell

Reg. 44748

Patent attorney

Marshall, Gerstein & Borun LLP

Chicago, IL · 60606

312-474-6300

Salim Arif Hasan

Reg. 38175

Patent attorney

Leydig Voit & Mayer, Ltd

Chicago, IL · 60601-6731

312-616-5600

Common questions

Do patent attorneys in Chicago cost more than the national average?

Patent attorney fees vary primarily by experience and complexity of the invention, not by city. A typical provisional patent application in the US runs $1,500 to $5,000; a non-provisional utility filing runs $5,000 to $15,000. Hourly rates in Chicago tend to track the broader Illinois legal market.

How many USPTO practitioners list a Chicago office?

1,891 USPTO-registered patent practitioners list a Chicago mailing address on the OEDCI roster. You can sort by firm size and contact each directly using the phone numbers shown.

Can I work with a Chicago practitioner remotely?

Yes. All filings happen through USPTO's electronic Patent Center — no in-person presence is required. A Chicago-based practitioner is convenient for local inventor signings and in-person meetings but not a requirement for representation.